What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON LOWER SILL AT LEVEL FR68 AND STR23R AT AFT GALLEY AREA (1EA); REF. NRC-2018-159125 W/O 909857. REPLACED LOWER SILL AT LEVEL STR23R BTW FR66 TO FR68 AFT GALLEY AREA (1 EA) IAW SRM 51-72-11 AND DRAWINGS D53480505, D53470150